I, too, had become a bit bored of finding things to cook that my boys will eat. I got a slow cooker just before Christmas and it is my new favourite thing. My 5 year old picky eater has proclaimed all new meals from the Crock Pot as "a bit tasty." Result! (The 3 year old is still a pain, and mostly eats beige carbs, but we are working on him!)
I think it must be down to texture of the meat (soft and tender) and also nice flavourful sauces. The trick is using fattier cuts (chicken thighs, pork shoulder, etc) so that the meat doesn't dry out. You can skim the fat.
So far, I have cooked Chinese pork, teriyaki chicken, bolognese, turkey chilli, whole pork joint with veggies, beef stew, etc. And we *all* eat the same thing now, so no more cooking multiple teas.
All of these meals can be served with rice/noodles/veggies/in wraps. I have been freezing the leftovers so I can take them out on the occasions when I don't feel like cooking.
http://www.skinnytaste.com has a lot of slow cooker recipes that are quite nice and also weight watchers friendly, if that is a consideration.
Also, the joy of the slow cooker is leaving it to cook for the day and you don't have to worry about it. Is a revelation!